That's too bad. In that case, it appears that the TP-Link TL-WDN4800 linked by DarkXale would work. D-link pci-e adapters generally perform rather well. There's a second option there. The last wireless adapter I tried was a
Linksys AE3000. It out performed all previous wireless adapters I tried. However, I ended up returning it for my new powerline set. :P
Before powerline, all my desperate attempts at researching the faster wireless solution at the time kept redirecting me to previous gen models of the AE3000 above all other adapters. Of course there is no telling what has changed since then.